131435768

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{641}}^1$

素因数の和:756

約数の個数: 48

約数和(自身を含む): 264170160

約数和(自身を除く): 132734392

約数列:

[1, 2, 4, 8, 19, 38, 71, 76, 142, 152, 284, 361, 568, 641, 722, 1282, 1349, 1444, 2564, 2698, 2888, 5128, 5396, 10792, 12179, 24358, 25631, 45511, 48716, 51262, 91022, 97432, 102524, 182044, 205048, 231401, 364088, 462802, 864709, 925604, 1729418, 1851208, 3458836, 6917672, 16429471, 32858942, 65717884, 131435768]

約数ペア:

[(1, 131435768), (2, 65717884), (4, 32858942), (8, 16429471), (19, 6917672), (38, 3458836), (71, 1851208), (76, 1729418), (142, 925604), (152, 864709), (284, 462802), (361, 364088), (568, 231401), (641, 205048), (722, 182044), (1282, 102524), (1349, 97432), (1444, 91022), (2564, 51262), (2698, 48716), (2888, 45511), (5128, 25631), (5396, 24358), (10792, 12179)]